Roll IDL to multivm@1350

core/testing/GCObservation.idl

Index: core/testing/GCObservation.idl
diff --git a/core/testing/LayerRectList.idl b/core/testing/GCObservation.idl
similarity index 85%
copy from core/testing/LayerRectList.idl
copy to core/testing/GCObservation.idl
index ee608cfdca956b7df997e667d48c0e1405cc0477..6c2d8e8b7cf3ec15182a06b35668543bda7035b5 100644
--- a/core/testing/LayerRectList.idl
+++ b/core/testing/GCObservation.idl
@@ -28,9 +28,10 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-[
-] interface LayerRectList {
-    readonly attribute unsigned long length;
-    getter LayerRect item([IsIndex,Default=Undefined] optional unsigned long index);
+interface GCObservation {
+    // Technically, this is true if the object was "near death"; the
+    // object may have been kept alive through a weak handle. Having
+    // been collected is the common case, though.
+    readonly attribute boolean wasCollected;
 };